Mold for casting pigs for linotype-machines



J. H. W. KNOOP.

MOLD FOR CASTING PIGS FOR LINOTYPE MACHINES.

APPLICATION FILED NOV. 2, 1920.

Patented Alig: 23, 1921.

3 SHEETS-SHEET 1.

J. H. W. KNOOP.

MOLD FOR CASTING PIGS FOR LINOTYPE MACHINES.

Patented Aug. 23, 1921.

APPLICATION FILED NOV.2,1920\ 3 SHEETS-SHEET 2.

J. H. W. KNOOP.

MOLD FOR CASTING PIGS FOR LINOTYPE MACHINES.

APPLICATION FILED NOV- Zfil 920.

3 SHEETSSHEET 3 Patented Aug. 23, 1921.

To all whom it may concern:

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specification of Letters latent. Patented Aug, 23, 1921. Application filed November 2, 1920. Serial No. 421,346.

' on each side of the mold, and headed bolts Be it known that I, JoHN H. W. KNoor, 15, which are provided with-nuts 16 to clamp a citizen of the United States, residing in the mold firmly between the two side mem- Highland Park, Upper Darby, Pennsyl here 14. In the lower portion of the stand Vania, have invented certain Improvements\are tie bolts 17. The support for th mold in Molds for Casting Pigs for Linotypemay bemade in any suitable manner with- Machines, of which the following is a specification. One object of my invention is to provlde a mold in which the individual pigs can be 'cast accurately and rapidly, and readily 5 removed the moment they are solidified.

A further object of the invention is to prevent the formation of burs, or fins, on the cast pig.

In the accompanying drawings: -Figure l is a perspective view of my improved mold;

Fig. 2 is a sectional elevation of the upper portion of the mold;

.Fig. 3 is a sectional elevation of the lower portion of the mold;

Fig. 4 is a sectional 4-4, Fig. 3; j

Fig. 5 is an end view 'of the lower portion of the mold;

Fig. 6 is a detached perspective v ew of the guide bracket; and

Fig. 7 is a detached perspective view of the plug for the lower end of the mold.

Referring-to the drawings, 1 is the body of the mold, rectangular, in the present instance. Located within this body is a cyl-. inder 2, forming the mold chamber (1. Between the outer casing of the mold and this cylinder is a water space 3 forming a jacket. Connecting with this space are the water plan view on thedine pipes 4 and 5, so that water is circulated in the space to keep the mold cool. The body 1 of the mold has an internal flange 6 at its lower end, Fig. 3, and the cylinder 2 has a shoulder 7 resting on the flange. Thelower end of the cylinder 2 is threaded and adapted to this thread is a nut 8, which holds the cylinder firmly to the body 1. The upper end of the cylinder 2 extends through a rectangular cap plate 9, which is fastened to the body 1 by screws 10. This end of the cylinder is preferably reduced and passes through an annular packing 12, and has -a screw ring 11, which holds the packing in place. This construction allows for expansion and contraction.

13 is a stand, which supports the mold. The stand, in the present instance, consists of two side members 14, which are located out departing from the essential features of the invention.

18 is a plug adapted to extend into and fit the lower portion of the cylinder 2 of the mold. This plug is made as clearly shown in Flg. 7, having an arm 19 at one side and a lug 20 at the opposite side through which the pivot pin 21 extends. The arm has three projections. Two of these projections 3:22 and 23 extend in one direction, while the other projection, 24:, extends in the oppos1te direction. Depending from the body of the mold are brackets 25 to which is pivoted a lever 26. A pivot pin 27 extends through the lever and through the brackets. One arm, 28 of the lever, is pivotally connected to the plug by the pivot pin 21, while the operating rod 29 is attached at 30 to the other arm 31 of the lever 26. Secured to the side of the mold body, and depending in line with the plug, is a guide bracket 32 having a lug 33, which engages the projection 22, and a lug 341, which engages the projection 23. On this guide is a stop 35 for the arm 19. On the lever 26 is a forked projection 36. The projection 24 extends into this fork. The arms of the fork are much wider than the projection so that there is a certain amount of lost motion.

The operating rod 29 is actuated by a lever 38, which'is pivoted to the bracket 37, which also acts as the upper guide for the rod 29, which is rectangular, in the present instance. The lever 38 is connected by a link 39 to the rod 29, as shown, so that, when the lever is moved in the direction of the arrow to move the plug to the closed position, the plug cannot be forced into the mold beyond a certain point, preventing the sticking of the plug, due to careless handling of the machine. When it is Wished to remove the plug, the lever is turned in the direction opposite from that indicated by the arrow, lifting the rod 29 to the point desired.

The mechanism is so designed that the plug will enter the mold cavity in order to make a neat fit between the plug and the walls of the cavity, preventing the formation of burs,or fins, on the pig of type metal.

The mechanism of the plug is so designed water will be in constant circulation in the chamber between the cylinder of the mold and the body in order to keep the cylinder as cool as possible. The plug 1s moved to the closed position, as shown in full lines 1n Fig. 3, and the molten type metal 1s poured into the upper end of the cyhnder. When the metal is set sufliciently, and before it 1s cool, the plug is withdrawn by moving the operating lever 38, which shifts the lever 26 and the plug to the position shown by dotted lines in Fig. 3. When the plug is 1n position, as shown in full lines, the projection 22 rests back of the lug 33 on the bracket 32 and the projection 23 is located between the lugs 34: and,35. On the first movement of the lever, the plug 1s wlthdrawn from the cylinder until the upper edge of the projection 22 passes the lower portion of the lug 33 and the upper portion of the projection 23 passes under the lug 34.. The lower edges of the lugs 33 and 34 are inclined so that the projections 22 and 23 travel on these inclined surfaces until they pass the lug, when they can be moved to the osition shown by dotted lines in Fig. 3.

he lost motion between the projection 24 and the forked arm 36 of the lever 26 allows for this movement. When the plug 18 is again moved into position, the pro ections 22 and 23 travel on their lugs 33 and 34 respectively and the plug moves up into the cylinder until it fits snugly therein, after which molten metal is poured into the mold and the above operation is repeated.

While I have described my invention as used in casting type metal pigs for linotype machines, it will be understood that the invention can be used in making castings of comparatively soft metal for other purposes.

I claim: 1. The combination in a mold for easting metallic pigs, of a mold body; a plug adapted to extend into the'mold chamber;

and means for actuating the plug so that it will first be withdrawn and then moved clear of the path of the pig, as the pig is discharged from the mold.

2. The combination in a mold for casting surrounding the mold chamber; a

otally mounted; means for pivoting the lever; and a guide bracket for guiding the plug as it is withdrawn from the mold so that it will movevertically and then move out of the the pi "to r0 clear 0 mold.

3. 'l he com ination in a mold for casting pigs of t pe metal, of a casing; a cylinder within t e casing and spaced therefrom forming a jacket; a plug arranged to close the lower end of the cylinder, said plu having a lug at one 'side and an arm at t e opposite side; three projections on the arm, two of said projections extending in one direction and the other projection extendin in the opposite direction a lever pivote to a bracket projectingfrom the casing of the mold and pivotally connected to the arm and lug of the mold; an operating rod connected to the lever, said lever having a forked extension engaging one of said projections of the arm of the plug; and a guide bracket having two lugs and a stop, the lower end of the arm being located between one of said lugs and the stop, when the plug is in the closed position, and the other pro ection being on the under side of the other lug of the bracket so that, when the plug is moved to the open position, the lugs guide the plug on a line parallel with the line of the cylinder until the plug is clear of the cylinder,

- when the lever moves the plug bodily to one side to allow the molded cylinder.

4. The combination in a mold for casting pigs of type metal, of a casing; a cylinder located within the casing and forming the mold chamber and spaced from the casing to form a water jacket, said cylinder extending through the bottom of the casing and threaded; a nut mounted on the threaded portion; a cap plate, the upper end of the cylinder extending through the cap plate; a nut in the cap plate; packin between the nut and the cap plate; a plug or closing the bottom of the mold during the pouring of the molten metal; and means foroperating the plug.

5. The combination in a mold for casting pigs, of a body; a cylinder therein forming pig to pass from the .the mold chamber; a plug arranged to enter and close the lower end of the mold chamber; mechanism for moving the plug into and out of position; an operating rod connected to said mechanism; and an operating lever pivoted to the body and connected to the rod.

6. The combination in a mold for casting metal, of a body in which is the mold chamber; a plug adapted to .extend into the mold rchamber; mechanism for moving the plug; a lever for operating said mechanism;

.andmeansfconnecting said lever to said mechanism, said vmeans bein arranged to limit' the inward movement 0 the plug into the mold-chamber.

JOHN H. W. KNOOP.

ath of the in order to allow 

